59.7.55H. (729.3) } : 
Article XX.—ON HETERANDRIA ZONATA SP. NOV. AND 
HETERANDRIA VERSICOLOR (GUNTHER) FROM THE 
ISLAND OF SANTO DOMINGO. 
By Joun TREADWELL NICHOLS. 
On a recent entomological collecting trip Mr. Frank E. Watson, of the 
American Museum, obtained a o& and @ adult and three immature speci- 
mens of Heterandria versicolor (Giinther) from the San Juan River (fresh- 
water) at Samana, Santo Domingo. He also obtained 5 adult & and two 
immature fishes of the genus from the freshwater creek near the railroad 
station at Sanchez. The immature specimens are too small for satisfactory 
study. The adults differ from the versicolor o' mentioned above strikingly 
in color and significantly in form, and are described as new. 
Heterandria zonata sp. nov. 
I have selected as type a specimen 26 mm. long to base of caudal. Head 3.4 in 
- this measure; depth 3.6; eye 3, in head; snout 4; width of mouth, 4; depth caudal 
peduncle, 1.6; pectoral, 1.5; ventral, 1.8; anal, 1; longest dorsal ray, 1.6; caudal 1. 
Scales 29. Dorsal 8. The caudal peduncle is elongate and compressed, mouth very 
small, eye large, caudal about even, a single row of somewhat obliquely pointed, 
more or less broad and compressed teeth in the jaws. Dorsal origin equidistant from 
base of caudal and border of preopercle. Anal origin nearer tip of snout than base 
of caudal by a distance equal to snout, when depressed not reaching caudal by a 
distance about two and one half times eye. Color in spirits pale, the scales outlined 
by narrow dark lines, indications of a lengthwise dark streak in the middle of the side. 
Three rather broad black bars on the side under the dorsal. A narrow black streak 
on the mid-dorsal line and mid-ventral line behind the anal. «Dorsal with a broad 
black margin, caudal with an ill-defined dark vertical streak centrally, other fins 
plain. 
The four other specimens (paratypes) range in length to base of caudal 
from 19 to 25 mm. All have the anal origin decidedly nearer snout than 
caudal, and 4 or 5 broad black bars on the sides. These characters alone 
show them to be distinct from the versicolor here described. 
Heterandria versicolor ((iinther). 
The o? is 23 mm. long to base of caudal. Head 3.4 in this measure, depth 4; 
eye, 3, in head; snout, 5; width of mouth, 3.5; depth caudal peduncle, 1.6; pectoral 
1.6; ventral, 1.5; anal, 1; longest dorsal ray, 1.7; caudal, 1.2. Seales 28. Dorsal 8. 
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